You can use iTaf (http://itaf.sourceforge.net). It can boot up / wake your Mac.
However, I doubt that it will work, when the lid is closed. Can't verify that here, but I'm happy if you try it and tell me the results.
Alarm Clock can wake the mac to sound the alarm. you can also use your songs in your iTunes. unfortunately is doesnt come with any generic alarm sounds. but its free!